I suspect there is right at this moment a great deal of research happening to determine the obviously “new” computations of the PR algo.

First of I do not mean TBPR…Pull the PR in smart PR or similar for a few sites. The ones where the PR has settled and all the data centers are showing the same PR, then check their links.

I see PR 3’s with less than 100 IBLs. While other PR 3’s that did not receive an increase have 1500 or better. I can only presume the algo has changed. Factors have been added, and links do not weigh what they used to.

So while we do not know what those factors may be right now. Look at YouTube main with your SEO eyes, and evaluate the site. I think you will find while the site has massive IBLs…It is lacking in many other potent metrics, that may logically be a portion of this new algo. Whatever it may contain.

Additionally, while the domain is a PR3 as you have pointed out…Many of the inner pages appear to have a much higher PR…Which may or may not be accurate. The domain url PR 3 seems to be settled in all data centers, but 1 ..Google English.

I suspect we can toss out those link charts relating to relative PR at this point…But time will tell. Who knows, maybe it’s a glitch and we’ll see a correction update.